Night of Terror — Andrew Lane

Robinson Crusoe and Friday, young agents of the king's secret spy agency, face their greatest adventure yet in the final book of the Crusoe trilogy. The nefarious work of the Circle of XIII has led to the infection of their friend Daniel Defoe, who is gradually joining the ranks of the Circle. The nations of Europe are on the brink of war. Crusoe and Friday must go to a place they never thought they would visit again―the island where they had first met and were stranded together for years. It turns out that the island may hold the key to saving Defoe, stopping the Circle, and heading off a world war that would topple the king of England. Crusoe and Friday's mission puts them back on the high seas and takes them across the ocean.

As Crusoe and Friday face the biggest challenge of their lives, the strength of their bond is tested, even as they wonder whether their closeness might lead to something more than just friendship.